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add regression tests for #1113 #1122

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Merged
merged 1 commit into from
Jul 11, 2025
Merged

add regression tests for #1113 #1122

merged 1 commit into from
Jul 11, 2025

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bhosmer-ant
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#1113 fixes a bug in FastMCP's simple logic for parsing structured data out of strings, by not attempting to parse JSON out of strings for arguments typed as str in the tool's input schema. This PR adds regression tests.

How Has This Been Tested?

Ran the new tests pre- and post-1113, confirmed they fail before and succeed after.

Breaking Changes

None in this PR - for #1113, code that was somehow relying on the explicit bug (tool signature types an argument as string, tool function receives deserialized JSON) would break, but a) seems like a vanishingly small class of edge cases and b) easily fixed by typing the argument properly.

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to change)
  • Documentation update

Checklist

  • I have read the MCP Documentation
  • My code follows the repository's style guidelines
  • New and existing tests pass locally
  • I have added appropriate error handling
  • I have added or updated documentation as needed

@bhosmer-ant bhosmer-ant requested a review from ihrpr July 10, 2025 21:49
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LGTM

@ihrpr ihrpr merged commit d28a1a6 into main Jul 11, 2025
22 of 23 checks passed
@ihrpr ihrpr deleted the basil/1113_regression_tests branch July 11, 2025 10:53
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2 participants